Remove unused sync_core() definitions

[urcu.git] / urcu / arch_x86.h

diff --git a/urcu/arch_x86.h b/urcu/arch_x86.h
index 64cc026f9cd46343cb977dc7b076bf9a7d70a317..e3171a24fa608d044de77ad8633e67e4adbbc69f 100644 (file)
--- a/urcu/arch_x86.h
+++ b/urcu/arch_x86.h
@@ -47,20 +47,6 @@ extern "C" {
 
 #define cpu_relax()    asm volatile("rep; nop" : : : "memory");
 
-/*
- * Serialize core instruction execution. Also acts as a compiler barrier.
- * On PIC ebx cannot be clobbered
- */
-#ifdef __PIC__
-#define sync_core()                                                      \
-       asm volatile("push %%ebx; cpuid; pop %%ebx"                       \
-                    : : : "memory", "eax", "ecx", "edx");
-#endif
-#ifndef __PIC__
-#define sync_core()                                                      \
-       asm volatile("cpuid" : : : "memory", "eax", "ebx", "ecx", "edx");
-#endif
-
 #define rdtscll(val)                                                     \
        do {                                                              \
             unsigned int __a, __d;                                       \